Sponsor Message:
Aviation Technical / Operations Forum
My Starred Topics | Profile | New Topic | Forum Index | Help | Search 
Q.VARIG 747-341s And 747-441s Engines Design.  
User currently offlinedennys From France, joined May 2001, 878 posts, RR: 1
Posted (2 years 3 months 2 weeks 5 days 13 hours ago) and read 2978 times:

Hi guys , can you help me .


Had the 747-341s the same engines design as the 747-441s?
They really seem to be closed one to the other .
The same case was on the Air India's 743s and 744s .

Many thanks your help
kind regards
dennys

6 replies: All unread, jump to last
 
User currently offlinejetmech From Australia, joined Mar 2006, 2687 posts, RR: 53
Reply 1, posted (2 years 3 months 2 weeks 5 days 8 hours ago) and read 2910 times:

According to these links;

http://www.planespotters.net/Product...7,TF-ATI-Air-Atlanta-Icelandic.php
http://jetphotos.net/census/aircraft2.php?msnid=747-24956

The 341 is powered by the CF6-80CB1, whilst the 441 is powered by the CF6-80C2B1F. GE aviation lists the primary difference as a higher pressure ratio and thrust for the B1F;

http://www.geaviation.com/engines/commercial/comparison_turbofan.html

I suspect another difference may be in the engine control. The B1 may have a hydro-mechanical fuel control, whilst the B1F may be FADEC. The Boeing 747-337M is powered by the CF6-80C2B1, with the 437 powered by the PW-4056.

http://www.planespotters.net/Product...ing/747/24159,VT-EPW-Air-India.php
http://www.planespotters.net/Product...ing/747/28094,VT-EVA-Air-India.php

Regards, JetMech

[Edited 2012-05-05 18:00:35]


JetMech split the back of his pants. He can feel the wind in his hair.
User currently offlineJetlagged From United Kingdom, joined Jan 2005, 2546 posts, RR: 24
Reply 2, posted (2 years 3 months 2 weeks 5 days 8 hours ago) and read 2896 times:

Some late production 747-300s had GE CF6-80C2B1 engines, the same type as installed on many 747-400s. The last three Varig 747-341s had them as did two Air India 747-337s. Varig 747-441s had the same engine, but with FADEC (CF6-80C2B1F). Air India's 747-437s have a different engine, the PW4056.

edit: JetMech beat me to it! AFAIK, the only physical difference between B1 and B1F is FADEC. The B1F has a slightly higher thrust rating.

[Edited 2012-05-05 18:22:17]


The glass isn't half empty, or half full, it's twice as big as it needs to be.
User currently offlinedennys From France, joined May 2001, 878 posts, RR: 1
Reply 3, posted (2 years 3 months 2 weeks 5 days 4 hours ago) and read 2856 times:

Many Many thanks ! You are brllient passionnated people .
Cheers
dennys


User currently offlineMax Q From United States of America, joined May 2001, 4441 posts, RR: 19
Reply 4, posted (2 years 3 months 2 weeks 5 days 3 hours ago) and read 2834 times:

Quoting Jetlagged (Reply 2):


Some late production 747-300s had GE CF6-80C2B1 engines, the same type as installed on many 747-400s. The last three Varig 747-341s had them as did two Air India 747-337s. Varig 747-441s had the same engine, but with FADEC (CF6-80C2B1F). Air India's 747-437s have a different engine, the PW4056.

edit: JetMech beat me to it! AFAIK, the only physical difference between B1 and B1F is FADEC. The B1F has a slightly higher thrust rating.

Are these the same engines installed on Air Force One ?



I know 'any aircraft carrying the President bla, bla, bla'



The best contribution to safety is a competent Pilot.
User currently offlineStarlionblue From Greenland, joined Feb 2004, 17019 posts, RR: 67
Reply 5, posted (2 years 3 months 2 weeks 4 days 22 hours ago) and read 2736 times:

Quoting Max Q (Reply 4):
Quoting Jetlagged (Reply 2):


Some late production 747-300s had GE CF6-80C2B1 engines, the same type as installed on many 747-400s. The last three Varig 747-341s had them as did two Air India 747-337s. Varig 747-441s had the same engine, but with FADEC (CF6-80C2B1F). Air India's 747-437s have a different engine, the PW4056.

edit: JetMech beat me to it! AFAIK, the only physical difference between B1 and B1F is FADEC. The B1F has a slightly higher thrust rating.

Are these the same engines installed on Air Force One ?



I know 'any aircraft carrying the President bla, bla, bla'

The VC-25A (bla, bla bla) have the CF6-80C2B1F. 



"There are no stupid questions, but there are a lot of inquisitive idiots."
User currently online747classic From Netherlands, joined Aug 2009, 2113 posts, RR: 14
Reply 6, posted (2 years 3 months 2 weeks 4 days 22 hours ago) and read 2708 times:

The following B743/CF6-80C2B1 are delivered by Boeing :

747-3D7------ MSN 23721 - L/N 681 Thai
747-3D7------ MSN 23732 - L/N 688 Thai
747-341-------MSN 24106 - L/N 701 Varig
747-341-------MSN 24107 - L/N 702 Varig
747-341-------MSN 24108 - L/N 703 Varig
747-337M---- MSN 24159 - L/N 711 Air India
747-337M---- MSN 24160 - L/N 719 Air India

Also two B742/CF6-80C2B1 are delivered :

747-2G4B-----MSN 23824 - L/N 679 USAF
747-2G4B-----MSN 23825 - L/N 685 USAF

All CF6-80C2 versions without -F are mechanical controlled with a main engine control (MEC) and a Power Management Control (PMC), a digital supervisory controller, jointly acting as the engine controlling system.
Mechanically controlled engines can have their thrust rating changed by replacing the MEC and the PMC.

The CF6-80C2B1F (as installed on the 744) introduced the first FADEC system on the CF6 family. Such electronically controlled engines have additional sensors installed on the engine, allowing a more precise control of systems, thereby decreasing fuel consumption (TSFC). On such engines the MEC and PMC are substituted by the Electronic Engine Control (EEC) . Engine thrust rating can be changed by only replacing the rating plug at the EEC.

MEC/PMC controlled CF6-80C2 engines cannot be modified to FADEC standard.

[Edited 2012-05-06 05:00:06]


Operating a twin over the ocean, you're always one engine failure from a total emergency.
Top Of Page
Forum Index

Reply To This Topic Q.VARIG 747-341s And 747-441s Engines Design.
Username:
No username? Sign up now!
Password: 


Forgot Password? Be reminded.
Remember me on this computer (uses cookies)
  • Tech/Ops related posts only!
  • Not Tech/Ops related? Use the other forums
  • No adverts of any kind. This includes web pages.
  • No hostile language or criticizing of others.
  • Do not post copyright protected material.
  • Use relevant and describing topics.
  • Check if your post already been discussed.
  • Check your spelling!
  • DETAILED RULES
Add Images Add SmiliesPosting Help

Please check your spelling (press "Check Spelling" above)


Similar topics:More similar topics...
747 Range On Less Than 4 Engines posted Sat Sep 1 2007 18:55:26 by Sphealey
747-300 With CF6-80 Engines posted Mon Dec 13 2004 04:47:38 by MrFord
747-300 @ 747-400D posted Mon Dec 19 2011 13:56:10 by rjm777ual
Why Different Max. FL For 747-8I And 747-8F? posted Sat Dec 17 2011 04:32:56 by 747classic
747-8 Cockpit And Type Rating posted Sun Jun 26 2011 09:29:37 by RJSampson
Common Type Rating 747-400 And 747-8. posted Thu Jun 17 2010 02:51:55 by 747classic
If Bombardier And EMB Were To Design A W/B? posted Fri Apr 30 2010 19:06:32 by 747400sp
747-500, 747-600, 747-700? posted Fri Apr 2 2010 12:59:01 by September11
Rr N3 Gauge 747 Classic And 400 posted Wed Dec 30 2009 12:35:24 by Kimon
A330 And A340 Exit Door 3 :Design posted Thu Oct 2 2008 15:39:03 by B773A346

Sponsor Message:
Printer friendly format